DS1819CR-5-U+

Supervisors Overview

The DS1819CR-5-U+ is a MicroMonitor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1 V to 5.5 V and features a single monitored input with a threshold voltage of 2.625 V. The device provides active high and active low push-pull outputs, includes a manual reset function, and incorporates a watchdog timer. It exhibits a reset delay time of 140 ms minimum and consumes 12 uA of operating current. The component is housed in an SOT-23-5 package and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates power-fail detection and watchdog timer functionality for comprehensive system supervision.
• Provides configurable active high and active low push-pull output signals.
• Supports manual reset operations via an external pushbutton interface.

Supervisors Applications

• Embedded processor and controller systems requiring voltage supervision
• Portable battery-powered devices needing low standby current
• Industrial control units utilizing watchdog protection

Supervisors Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing PCB footprints and design specifications. Check for RoHS compliance documentation if required for specific regulatory standards. Review datasheet revisions for any functional changes.

Supervisors Selection Notes

Select this part when a single-channel supervisor with both undervoltage and overvoltage monitoring is required. The inclusion of a manual reset pin allows for user-initiated system recovery. Consider the 12 uA quiescent current for energy-sensitive applications. Verify that the 2.625 V threshold aligns with the target rail voltage requirements.

Supervisors Part Context

This component belongs to the DS1819BR/AR/CR series of MicroMonitor circuits. These devices are designed to monitor a single voltage rail and provide reset signals to microprocessors. The series typically integrates watchdog timers and power-fail detection in compact packages suitable for space-constrained designs.

Supervisors Replacement Considerations

Public confirmed substitute part numbers: None identified.